Improvement in belaying devices



A. STODDARD. Belayng Device.

No. 222,328. Patented Dec.2,1879.

l j idf/M@ .FEERS. PHOTO-LHHDGRAPHER. WASmNGToN. D C.

ALFRED STODDARD, OF NEW YORK, N. Y.

'MBeQA/EMENTINBENLAYIN@ DEVICES- Specication forming part of LettersPatent No. 222,328,4 dated December 2, 1879 5 application ile September19, 1879.

To all 'whom fit may concern.: A l

Be it known that I, ALFRED STODDARD, of the city of New York, in thecounty and State of New York, have invented a certain new and usefulImprovement in Belaying Devices,

of which the following is a specification.

The object of my invention is to provide, as a substitute for thebelaying-pins and cleats heretofore in use on shipboard for securing theends of ropes, al device which isY more handy, because it requires lessrope to be belayed to make a' secure hitch, and which `saves much oflthe time ordinarily consumed in belaying.

In my device I employ a sheave provided with a circumferential grooveand oblique grooves extending therefrom, in which the rope is guided bythe operator as the sheave revolves, and which act in conjunction withan adjacent portion of the frame-work to clamp the rope. These sheavesare similar to the sheave for which Letters Patent N o. 25,978 weregranted Isaac E. Palmer, November l, 1859.

My invention consists in the combination, with such a pulley or sheave,of a frame-work for supporting the same, provided with an openingopposite the said circumferential groove, to permit the rope to'be.appliedl to the pulley without passing it around the same, and withV alug or projection extending in proximity to said oblique grooves uponthe same side of the pulley as said'opening, and effecting, inconjunctionwith the sheave, the clamping of the rope.

It also consists in the combination, with `such a sheave, of a frameworktherefor com? posed of two side pieces receiving the ends of the axis ofsaid sheave, provided with such an opening andlug or project-ion, andcomprising a cross-piece uniting the two side pieces, and a sheavearranged parallel with the first said sheave and upon the opposite sideofthe said cross-piece, whereby, when the rope is passed over both saidsheaves, the strain of the rope is brought upon both sides of saidcross-piece. In the accompanying drawings, Figure 1 represents a sideview-of my belaying device;

\Fig. 2, a face view at right angles to Fig. l; and Fig. 3, a verticalsection on the dotted line x x, Fig. l. z

Similar letters of reference designate corresponding parts in all thefigures. g A designates a sheave, provided with a circumferentialgroove, a, extending Ventirely around it, and several oblique grooves,b, (here ing the two side pieces, and representedl as Vcast in one piecetherewith. One of the said side pieces is here represented as providedwith a foot, c, by which it may be fastened to the yard or rail of avessel; but it might, in place of said foot, be provided with a ilangeto secure it to the side of a mast, or so constructed as to be lashed toa stay. One ofthe side pieces is here shown as provided with an eye, inwhich is secured the end of arope; but. this forms no part of myinvention.

One of the side pieces is provided with a lug or projection, d, inproximity with theoblique grooves b, and eifecting therewith theclamping of the rope.

C designates an opening arranged upon the same side of the pulley orsheave asv the lug or projection d, and permitting the rope D to beapplied directly to the sheave without the necessity of passingit aroundthe saine.

In order to bring the strainof the rope upon both sides of thecross-piece B', I have represented a second sheave, E, as arrangedparallel-with the sheave A, and on the .opposite side of the cross-pieceB. y

In belaying, the rope is rst passed under the sheave A, thence up overthe sheaveE, and back to the sheave A, where it is turned into one ofthe oblique grooves and clamped in place.

It' desirable, the rope might be passed two or three times around thetwo sheaves instead of once, as represented. i

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, with a sheave provided with a circumferential grooveand one or more oblique grooves extending therefrom, of a frame-work forsupporting the same, provided with an opening opposite thecircumferential groove, to permit the rope to be applied to the sheaveWithout; passing it around the same, B B, provided with the opening Cand lug or and also provided with a lug or projection exprojection d,and comprising the cross-'piece B',

tending in proximity to said oblique grooves and the sheave E, arrangedparallel with the upon the same side of the sheave as said opensheave Aand on the opposite side of the ing, and eeeting, in conjunction withthe cross-piece B,snbstantia11y as speced.

sheave the clamping of the rope snbstanmany s Specied ALFRED STODDARD.

2. The combination, with the sheave A, hav- Witnesses:

ing circumferential and oblique grooves, of CHANDLER HALL,

the frame-work composed of the side pieces, E. P. JESSUP.

